How avoid to excced max num of particles?

Blitz3D Forums/Blitz3D Programming/How avoid to excced max num of particles?

Pinete (Posted 2005) [#1]

Hi all, I'm a registered user of Particle Candy, trying to email to the author without success, I need help with the next issue. I have a world in which there are a lot of explosions (imagine a bomb explosion). In order to make the trials I have defined a key to launch an explosion. The method is simple: I create a new emitter each time I press the 'explosion key' The problem comes when, some time ago, after launched some explosions (twenty, maybe, but not all simultaneosly), the lib error comes "Max number of particles exceded, please, increase the ptnumparticles" (or something similar). The problem is that even changing this number, the problem will come, sooner or later, because if the number pt_numparticles is just growing each time I create a new emitter, changing that number the most I do is postpose the error... Sumarizing: How could I put a lot of different explosions without experiment this error? Thanks in advance!

Shambler (Posted 2005) [#2]

Are you sure it is 'Max number of particles'? I can't find this error in the particle candy file but there is a 'Max number of particle types' error, you are probably getting this. What you are probably doing is creating new particle types for every bomb you make e.g. flame type, smoke type etc. You only need to create the particle types once, not for every bomb.

Pinete (Posted 2005) [#3]

Thanks, Yes, you are right, the error is referred to the number of 'types' of particle. I don't know how to avoid that. If I don't create an emmiter for each bomb, how should I do that? The target is to have various explosions in secreen simultaneously. I have tried somethings using "CopyParticleType" (I don't know exactly if this has so much to do with the solution), without any success... Could you please help pointing me in the right direction??? Thanks in advance.

Shambler (Posted 2005) [#4]

OK, here is a simple demo. Include "particle candy.bb" Graphics3D 800,600,32 SetBuffer BackBuffer() Global look=CreatePivot() Global cam=CreateCamera(look) PositionEntity cam,0,150,0 PointEntity cam,look Dim Particle_Type(100); Up to 100 particle types InitParticles(cam, "particles.png", 3) Create_Particle_Types() Global numemitters=0 Global lasttime=MilliSecs() While Not KeyHit(1) ;make and explosion every 1/10th second 1000 times If MilliSecs()-lasttime>100 If numemitters<1000 numemitters=numemitters+1 emitter=CreateEmitter() Emitter_AddParticleType emitter, Particle_Type(0), 0,10000,20 Emitter_AddParticleType emitter, Particle_Type(1), 0,10000,20 Emitter_AddParticleType emitter, Particle_Type(2), 0,10000,20 Emitter_Start emitter PositionEntity emitter,Rnd(-50,50),Rnd(-50,50),Rnd(-50,50) lasttime=MilliSecs() EndIf EndIf UpdateParticles TurnEntity look,1,1,1,1 UpdateWorld() RenderWorld() Text 0,0,"Emitters "+numemitters Text 0,15,"Particles "+pt_numParticles Flip Wend FreeParticleSystem () Function Create_Particle_Types% () ;Red Smoke Particle_Type(0) = CreateParticleType() ParticleType_SetImage Particle_Type(0),9 ParticleType_SetSpeed Particle_Type(0),80,0 ParticleType_SetRandomSpeed Particle_Type(0),.02,0,.02 ParticleType_SetSize Particle_Type(0),2,1,4,7 ParticleType_SetAlpha Particle_Type(0),.5,.2,-.25 ParticleType_SetWeight Particle_Type(0),0,0 ParticleType_SetRotation Particle_Type(0),1,0 ParticleType_SetColor Particle_Type(0),255,50,50,0,0,0,0 ParticleType_SetEmissionAngle Particle_Type(0),3,360 ParticleType_SetStartOffsets Particle_Type(0),0,0,0,0,0,0 ParticleType_SetLifeTime Particle_Type(0),250 ParticleType_SetAddedBlend Particle_Type(0),0 ;FireBall Particle_Type(1) = CreateParticleType() ParticleType_SetImage Particle_Type(1),5 ParticleType_SetSpeed Particle_Type(1),0,0 ParticleType_SetSize Particle_Type(1),2,0,-2 ParticleType_SetAlpha Particle_Type(1),1,0,0 ParticleType_SetWeight Particle_Type(1),0,0 ParticleType_SetRotation Particle_Type(1),1,0 ParticleType_SetColor Particle_Type(1),255,255,200,0,-200,-200,-200 ParticleType_SetEmissionAngle Particle_Type(1),0,1 ParticleType_SetStartOffsets Particle_Type(1),0,0,0,0,0,0 ParticleType_SetLifeTime Particle_Type(1),2500 ParticleType_SetBounce Particle_Type(1),0,0,0 ParticleType_SetPulsation Particle_Type(1),4 ParticleType_SetAddedBlend Particle_Type(1),0 ; SPARKS Particle_Type(2) = CreateParticleType() ParticleType_SetImage Particle_Type(2),1 ParticleType_SetSpeed Particle_Type(2),15,5 ParticleType_SetSize Particle_Type(2),.5,.15,-.5 ParticleType_SetAlpha Particle_Type(2),1,.25,-.18 ParticleType_SetWeight Particle_Type(2),2,0 ParticleType_SetRotation Particle_Type(2),2,0 ParticleType_SetColor Particle_Type(2),255,246,149,20,-150,-200,-150 ParticleType_SetEmissionAngle Particle_Type(2),3,360 ParticleType_SetStartOffsets Particle_Type(2),0,0,0,0,0,0 ParticleType_SetLifeTime Particle_Type(2),2000 ParticleType_SetBounce Particle_Type(2),0,0,0 ParticleType_SetPulsation Particle_Type(2),0 ParticleType_SetAddedBlend Particle_Type(2),0 End Function The key is to create an emitter for every bomb but do not create individual particles types for each bomb. You only create the particle types once and then each emitter uses the same ones.

Pinete (Posted 2005) [#5]

Thank you very much Shambler! Sincerely, a lot of thanks for your help and your concern! you rocks! I've run your code and works perfectly! that's the stuff I want to do! Again, thank you very much for all. Best regards,